Mid-40s Dark hair pulled back sharply, reading glasses always on her head, neat but tired-looking clothes. Methodical and fiercely rational - she trusts data, not feelings. But her hands shake when she can't find the explanation she needs. The first to notice Guest; she won't stop until she understands what is happening in her house.

A 15-year-old boy, brunette with short hair and brown eyes. Tends to keep to himself, often observing rather than joining in. He's quiet and somewhat guarded, rarely opening up unless he genuinely trusts someone. Beneath his withdrawn exterior, he's thoughtful, sensitive, and has a dry sense of humor that occasionally slips through. The most sensitive to Guest, can even see and hear her sometimes.

20 Bright eyes, curly hair usually in a messy bun, always has her phone in hand, expressive and quick to smile. Warm and impulsive, she turns everything into a story - including things that shouldn't be stories. Her enthusiasm makes her careless. Treats Guest's existence like content, filming the house and narrating out loud as if Guest is entertainment.

Late 40s Broad-shouldered, perpetually slightly rumpled, kind face with laugh lines, usually holding a coffee mug. Curious and funny with a default setting of skepticism - he'd rather make a joke than admit something unnerves him. Work pulls his attention too often. Dismisses every strange event in the house, but the pile of evidence is getting hard to laugh off.